| November 6, 2019 | SVM Asset Management Limited | 0.19% | still open |
| October 31, 2019 | SVM Asset Management Limited | 0.50% | still open |
| March 18, 2019 | SVM Asset Management Limited | 0.49% | still open |
| March 12, 2019 | SVM Asset Management Limited | 0.57% | still open |
| January 3, 2019 | Blackrock Institutional Trust Company, National Association | 0.00% | still open |
| January 3, 2019 | Blackrock Investment Management (UK) Limited | 0.00% | still open |
| December 21, 2018 | Blackrock Institutional Trust Company, National Association | 1.58% | still open |
| December 19, 2018 | Blackrock Institutional Trust Company, National Association | 1.69% | still open |
| December 17, 2018 | Blackrock Institutional Trust Company, National Association | 1.78% | still open |
| December 12, 2018 | Blackrock Investment Management (UK) Limited | 1.18% | still open |
| November 27, 2018 | Blackrock Investment Management (UK) Limited | 1.28% | still open |
| November 23, 2018 | Blackrock Institutional Trust Company, National Association | 1.80% | still open |
| November 23, 2018 | SVM Asset Management Limited | 0.64% | still open |
| October 10, 2018 | Blackrock Institutional Trust Company, National Association | 1.70% | still open |
| October 9, 2018 | Blackrock Institutional Trust Company, National Association | 1.69% | still open |
| October 4, 2018 | Blackrock Institutional Trust Company, National Association | 1.70% | still open |
| October 3, 2018 | Blackrock Institutional Trust Company, National Association | 1.69% | still open |
| September 28, 2018 | Blackrock Institutional Trust Company, National Association | 1.70% | still open |
| September 25, 2018 | Blackrock Investment Management (UK) Limited | 1.30% | still open |
| September 19, 2018 | Blackrock Investment Management (UK) Limited | 1.23% | still open |
| September 17, 2018 | Blackrock Institutional Trust Company, National Association | 1.61% | still open |
| September 13, 2018 | Blackrock Investment Management (UK) Limited | 1.11% | still open |
| August 30, 2018 | SVM Asset Management Limited | 0.57% | still open |
| August 22, 2018 | Menta Capital LLC | 0.78% | still open |
| August 21, 2018 | Blackrock Institutional Trust Company, National Association | 1.59% | still open |
| August 16, 2018 | Menta Capital LLC | 0.80% | still open |
| August 10, 2018 | Blackrock Institutional Trust Company, National Association | 1.66% | still open |
| August 6, 2018 | SVM Asset Management Limited | 0.79% | still open |
| August 2, 2018 | SVM Asset Management Limited | 1.61% | still open |
| July 31, 2018 | SVM Asset Management Limited | 1.76% | still open |
| July 31, 2018 | Blackrock Institutional Trust Company, National Association | 0.90% | still open |
| July 27, 2018 | Blackrock Investment Management (UK) Limited | 1.00% | still open |
| July 27, 2018 | Blackrock Institutional Trust Company, National Association | 0.87% | still open |
| July 25, 2018 | Blackrock Investment Management (UK) Limited | 1.13% | still open |
| July 25, 2018 | Blackrock Institutional Trust Company, National Association | 1.02% | still open |
| June 15, 2018 | Millennium International Management LP | 0.19% | still open |
| June 14, 2018 | Millennium International Management LP | 0.80% | still open |
| June 13, 2018 | Millennium International Management LP | 0.74% | still open |
| June 11, 2018 | Blackrock Investment Management (UK) Limited | 1.05% | still open |
| June 11, 2018 | Millennium International Management LP | 0.61% | still open |
| June 7, 2018 | Millennium International Management LP | 0.50% | still open |
| June 5, 2018 | Blackrock Investment Management (UK) Limited | 1.19% | still open |
| June 5, 2018 | Blackrock Institutional Trust Company, National Association | 0.89% | still open |
| June 4, 2018 | Blackrock Investment Management (UK) Limited | 1.20% | still open |
| May 31, 2018 | Blackrock Institutional Trust Company, National Association | 0.90% | still open |
| April 9, 2018 | Blackrock Investment Management (UK) Limited | 1.10% | still open |
| March 6, 2018 | Blackrock Institutional Trust Company, National Association | 0.80% | still open |
| March 5, 2018 | Blackrock Investment Management (UK) Limited | 1.02% | still open |
| March 1, 2018 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| February 26, 2018 | Blackrock Institutional Trust Company, National Association | 0.60% | still open |
| February 21, 2018 | Blackrock Investment Management (UK) Limited | 0.96% | still open |
| February 14, 2018 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| February 8, 2018 | Blackrock Investment Management (UK) Limited | 0.83% | still open |
| February 2, 2018 | Blackrock Investment Management (UK) Limited | 0.73% | still open |
| January 26, 2018 | Blackrock Investment Management (UK) Limited | 0.61% | still open |
| January 16, 2018 | Blackrock Investment Management (UK) Limited | 0.50% | still open |
| November 21, 2017 | Merian Global Investors (UK) Limited | 0.48% | still open |
| August 7, 2017 | Merian Global Investors (UK) Limited | 0.57% | still open |
| April 4, 2017 | Ennismore Fund Management Limited | 0.25% | still open |
| March 30, 2017 | Ennismore Fund Management Limited | 0.54% | still open |
| March 27, 2017 | Ennismore Fund Management Limited | 0.67% | still open |
| October 18, 2016 | Ennismore Fund Management Limited | 0.73% | still open |
| April 14, 2016 | Parvus Asset Management Europe Limited | 0.00% | still open |
| March 24, 2016 | Parvus Asset Management Europe Limited | 1.50% | still open |
| March 17, 2016 | Parvus Asset Management Europe Limited | 1.63% | still open |
| March 7, 2016 | Parvus Asset Management Europe Limited | 1.76% | still open |
| February 9, 2016 | Parvus Asset Management Europe Limited | 1.89% | still open |
| February 8, 2016 | Parvus Asset Management Europe Limited | 1.90% | still open |
| December 2, 2015 | Parvus Asset Management Europe Limited | 2.00% | still open |
| December 1, 2015 | Parvus Asset Management Europe Limited | 1.99% | still open |
| October 13, 2015 | Parvus Asset Management Europe Limited | 1.71% | still open |
| October 6, 2015 | Parvus Asset Management Europe Limited | 1.65% | still open |
| October 1, 2015 | Parvus Asset Management Europe Limited | 1.50% | still open |
| September 29, 2015 | Parvus Asset Management Europe Limited | 1.43% | still open |
| September 28, 2015 | Parvus Asset Management Europe Limited | 1.33% | still open |
| September 24, 2015 | Parvus Asset Management Europe Limited | 1.26% | still open |
| September 18, 2015 | Parvus Asset Management Europe Limited | 1.14% | still open |
| September 17, 2015 | Parvus Asset Management Europe Limited | 1.00% | still open |
| September 11, 2015 | Parvus Asset Management Europe Limited | 0.94% | still open |
| September 4, 2015 | Parvus Asset Management Europe Limited | 0.72% | still open |
| September 2, 2015 | Parvus Asset Management Europe Limited | 0.57% | still open |
| April 10, 2014 | GSA Capital Partners LLP | 0.46% | still open |
| April 9, 2014 | GSA Capital Partners LLP | 0.50% | still open |
| January 7, 2014 | Blackrock Institutional Trust Company, National Association | 0.45% | still open |
| November 6, 2013 | Sierra Global Management, LLC | 0.00% | still open |
| November 1, 2013 | Sierra Global Management, LLC | 0.57% | still open |
| September 18, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| September 17, 2013 | Alphagen Capital Limited | 0.39% | still open |
| September 5, 2013 | Sierra Global Management, LLC | 0.46% | still open |
| September 3, 2013 | Sierra Global Management, LLC | 0.57% | still open |
| September 3, 2013 | Alphagen Capital Limited | 0.50% | still open |
| August 7, 2013 | Alphagen Capital Limited | 0.47% | still open |
| August 1, 2013 | Alphagen Capital Limited | 0.56% | still open |
| July 30, 2013 | Alphagen Capital Limited | 0.69% | still open |
| July 25, 2013 | Alphagen Capital Limited | 0.77% | still open |
| July 22, 2013 | Barrington Wilshire LLC | 0.42% | still open |
| July 18, 2013 | Barrington Wilshire LLC | 0.73% | still open |
| July 11, 2013 | Barrington Wilshire LLC | 0.90% | still open |
| July 1, 2013 | Sierra Global Management, LLC | 0.48% | still open |
| June 25, 2013 | Barrington Wilshire LLC | 0.94% | still open |
| June 24, 2013 | Alphagen Capital Limited | 0.82% | still open |
| June 19, 2013 | Barrington Wilshire LLC | 1.09% | still open |
| June 11, 2013 | Barrington Wilshire LLC | 1.20% | still open |
| May 31, 2013 | Barrington Wilshire LLC | 1.30% | still open |
| May 24, 2013 | Alphagen Capital Limited | 0.76% | still open |
| May 23, 2013 | Barrington Wilshire LLC | 1.36% | still open |
| May 22, 2013 | Barrington Wilshire LLC | 1.44% | still open |
| May 14, 2013 | Barrington Wilshire LLC | 1.60% | still open |
| May 14, 2013 | Alphagen Capital Limited | 0.61% | still open |
| May 7, 2013 | Barrington Wilshire LLC | 1.68% | still open |
| April 23, 2013 | Alphagen Capital Limited | 0.52% | still open |
| April 22, 2013 | Barrington Wilshire LLC | 1.79% | still open |
| April 16, 2013 | Barrington Wilshire LLC | 1.85% | still open |
| April 12, 2013 | Barrington Wilshire LLC | 1.98% | still open |
| April 8, 2013 | Alphagen Capital Limited | 0.39% | still open |
| April 4, 2013 | Alphagen Capital Limited | 0.50% | still open |
| February 13, 2013 | Barrington Wilshire LLC | 2.08% | still open |
| February 6, 2013 | Barrington Wilshire LLC | 2.37% | still open |
| January 31, 2013 | Barrington Wilshire LLC | 2.50% | still open |
| January 31, 2013 | Sierra Global Management, LLC | 0.51% | still open |
| January 28, 2013 | Barrington Wilshire LLC | 2.57% | still open |
| January 18, 2013 | Alphagen Capital Limited | 0.47% | still open |
| January 18, 2013 | Cazenove Capital Management Limited | 0.44% | still open |
| January 17, 2013 | Alphagen Capital Limited | 0.50% | still open |
| January 8, 2013 | Cazenove Capital Management Limited | 0.63% | still open |
| December 28, 2012 | Barrington Wilshire LLC | 2.70% | still open |
| December 28, 2012 | Sierra Global Management, LLC | 0.45% | still open |
| December 18, 2012 | Barrington Wilshire LLC | 2.79% | still open |
| December 14, 2012 | Barrington Wilshire LLC | 2.90% | still open |
| December 11, 2012 | Barrington Wilshire LLC | 2.97% | still open |
| November 1, 2012 | Barrington Wilshire LLC | 3.18% | still open |
| November 1, 2012 | Sierra Global Management, LLC | 0.58% | still open |